Hex Bolts and Bolt-Type Fasteners
Hex bolts and bolt-type fasteners from China are commonly sourced for structural connections, machinery assembly, construction steelwork, and general industrial fastening applications. Buyers typically need to confirm standard reference (DIN 933, ISO 4017, DIN 931, ISO 4014, ASTM A307, A325, A490, or equivalent), diameter, length, thread pitch, thread length, property class (4.8, 8.8, 10.9, 12.9), material (carbon steel, alloy steel, stainless steel 304/316), and surface finish (zinc plating, hot-dip galvanizing, black oxide, zinc flake coating, plain or mechanical plating) before quotation. We support sourcing communication for bolts with matching nuts and washers, mixed SKU fastener orders, DIN / ISO / ASTM requirement review, and Hebei / Yongnian fastener cluster sourcing where applicable. Prices, MOQ, delivery lead time, packing details, and documentation are confirmed after manual RFQ review. Product images are representative only; final specifications should be confirmed by buyer drawings, standards, samples, or purchase lists.
Quick Buyer Conclusion
Bolts should be specified by standard, diameter, length, thread type, grade, material, finish, quantity, packing, and matching nut or washer requirements before formal quotation. Buyers should confirm standard, size, grade, material, finish, quantity, packing, and inspection requirements before requesting a formal quotation.
Common bolt references include DIN 933, ISO 4017, DIN 931, ISO 4014, buyer drawings, and project-specific BOM notes. Grade 4.8, 8.8, 10.9, and 12.9 may require different material, heat treatment, and inspection expectations.
These pages are product knowledge references for manual sourcing communication, not price pages or automatic transaction pages.
Product images are representative category references only. Final specifications should be confirmed by buyer drawings, standards, samples, or purchase lists.
Common Product Types
Use this table as a starting point for RFQ preparation. Final specifications should come from buyer documents.
| Product Type | Typical RFQ Information | Buyer Note |
|---|---|---|
| Hex bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
| Heavy hex bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
| Carriage bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
| Flange bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
| U-bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
| Full-thread and partial-thread bolts | Common inquiry data includes standard, size, material, finish, quantity, packing, and application. | Confirm drawings, BOM, samples, or purchase lists before final RFQ. |
Standards, Grades, Materials and Finishes
Buyers should define the required standard or drawing reference, property class or material grade, surface finish, quantity, and packing requirement. Common finishes may include zinc plating, HDG, black finish, zinc flake coating, or stainless steel where suitable. The correct choice depends on application and buyer requirements.
When a supplier suggests a substitution, the buyer should confirm whether the alternative is acceptable before production. Substitution should not be assumed from similar appearance or similar product names.
RFQ Information Checklist
- Product name
- Standard or drawing reference
- Size and key dimensions
- Thread pitch if applicable
- Grade / class / material
- Surface finish
- Quantity
- Packing and label requirements
- Application environment
- Matching parts if required
- Inspection documents
- Destination or shipment plan
Common Procurement Mistakes
- Choosing full thread or partial thread only from photos
- Mixing DIN and ISO references without approval
- Ignoring thread pitch
- Not matching bolt grade with nut class
- Mixing zinc plated, HDG, black finish, and stainless steel without checking assembly fit
- Leaving packing weight until shipment planning
Manual Review Notes
For first orders or mixed shipments, buyers should separate confirmed repeat items from trial items. This helps the sourcing review identify which products can follow existing drawings and which products need samples, additional documents, or engineering confirmation.
For fastener RFQ review or sourcing communication, send your product list, drawings, standards, quantities, finish requirements, and packing expectations to xyan060816@gmail.com.
Related Sourcing Guides
These links connect the product category to sourcing, document, finish, mixed shipment, and FAQ review.
FAQ
Short answers for buyers preparing manual RFQs.
What information should buyers send for Hex Bolts and Bolt-Type Fasteners?
Buyers should send standard, size, material, grade, finish, quantity, packing, drawings or samples, application, and required inspection documents.
Are product images final specifications?
No. Images are representative references only. Final specifications should be confirmed from drawings, standards, samples, or purchase lists.
What documents can be discussed before shipment?
Depending on the item, buyers may discuss dimensional reports, MTC/MTR, coating reports, thread checks, packing lists, and pre-shipment photos.
How should buyers choose material and finish?
Material and finish should follow application environment, strength requirement, corrosion exposure, thread fit, and buyer project specifications.
Can these products be included in mixed fastener orders?
Yes, mixed orders can be reviewed manually when SKU data, carton data, weight, finish, and packing requirements are clear.
Send RFQ for Manual Review
Share product names, drawings, standards, quantities, finish requirements, packing expectations, and inspection document needs for manual review.
Send RFQEmail: xyan060816@gmail.com